Study on Noise Reduction in Up-conversion Single Photon Detectors
Lijun Ma, Oliver T. Slattery, Xiao Tang
Up-conversion single photon detector technology has been established as efficient for photons in near infrared range. However, its dark count rate is a major concern for some applications in quantum optics. We have theoretically and experimentally studied the causes of dark counts, improved its noise figure, and developed an up-conversion detector with an ultra low dark count rate. A reduced dark count rate of only 320 counts per second is achieved at the maximum Overall detection efficiency of 18% and a dark count rate of less than 100 counts per second is achieved at a detection efficiency of 10%. The ultra low dark count rate enables this type of up-conversion detector to be utilized in a variety of applications where weak signals in the near IR region are only at a level of few thousand photons per second. sources.
Proceedings of SPIE, Volume 7851, Quantum Communications and Quantum Imaging VIII
, Slattery, O.
and Tang, X.
Study on Noise Reduction in Up-conversion Single Photon Detectors, Proceedings of SPIE, Volume 7851, Quantum Communications and Quantum Imaging VIII , San Diego, CA, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906183
(Accessed December 9, 2023)